package com.example.demo.controller;

import com.auth0.jwt.JWT;
import com.example.demo.entity.User;
import com.example.demo.entity.VO.LoginUser;
import com.example.demo.service.UserService;
import com.example.demo.utils.JWTUtils;
import com.example.demo.utils.ResponseResult;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;

@RestController
public class UserController {
     @Autowired
    UserService userService;
    @Autowired
    RedisTemplate<String,Object> redisTemplate;  //no bean RedisTemplate
    //登录验证
    @PostMapping("/login")
    public ResponseResult<String> login(@RequestBody LoginUser loginUser){
        //先判断验证码是否正确
        //1如何从redis取出保存的验证码
        String storeCode = (String) redisTemplate.opsForValue().get("captcha_codes:"+loginUser.getUuid());
        System.out.println(storeCode+loginUser.toString());
        //2用户输入的验证码和storeCode比对
        if(loginUser.getCode().equals(storeCode)){

            User u = userService.getUser(loginUser);
            if(u!=null){  //比对账号和密码

                Map<String,String> map = new HashMap<>();
                map.put("userid",u.getUserId()+"");
                map.put("username",u.getUserName());
                String token = JWTUtils.getToken(map);  //getToken方法中 map<String,String>
                //3比对成功后，删除redis
//                   redisTemplate.delete(storeCode);
                redisTemplate.delete("captcha_codes:" + loginUser.getUuid());
                return ResponseResult.createBySuccess(200,token,"登录成功");
            }
            return ResponseResult.createBySuccess(500,"","账号或密码错误");
        }else{
            return ResponseResult.createBySuccess(500,"","验证码错误");
        }
    }

    @GetMapping("/getInfo")
    public ResponseResult<User> getInfo(HttpServletRequest request){
          //如何根据token获取用户信息id
        //从token获得id
        String token =  request.getHeader("Authorization");
        System.out.println(token+"   ");
        String id= JWT.decode(token.substring(token.lastIndexOf(" ") + 1)).getClaim("userid").asString();  //
        User user = userService.getUserById(Integer.parseInt(id));
         //根据id从数据表中获取用户的其他信息，封装到user实体类中
        return ResponseResult.createBySuccess(200,user,"查询成功");
    }
}
